Wick lubricator



Dec. 6,1932. H, KREIDEL 1,890,157 K y WICK LUBRICATOR Filed Nov. 12, i928 lill/[III Avana/@l Patented Dec. 6, 1932 PTET HANS KREIDEL, 0F WIESBADEN, GERMANY WICK LUBRICATOR Application filed November 12, 1928, Serial No. 318,685, and in Germany May 3, 1928..

is necessary for commencing the wick lubrii cation when the wick does not produce an to remove any stoppages which may be caused in the passages or bores through which the"-` of a. separate securing member, is tightly guided in this and is provided with a sepa# rate nipple extension containing non- 0 return-valve. g

pressure tight container for the supply o' lubricant in the bottom al of which is secured a pipe Z) open at the bottom a Ad extending to near the top of the container. VEhe passage c in this pipe communicates at the top with a radial passage c1 leading into the interior of the container. On the upper portion of this air inlet and outlet pipe Z2 slides a cork washer' (Z provided with a metal bushing, this iioat rising and sinking with the level of the lubricating oil and th As canosing or closing the passage ci. An extension a2 of the bottom al of the supply contain r o serves for securing the latter to the point to be lubricated. The extension a2 has a transverse passage and through this passage is passed in a liuidtight manner the hollow screw e provided with an annular groove el. The screw e is screwed into the screw threaded hole of the member to be lubricated. The

etlective suction action and is also necessary ln the drawing `fr indicates a collar of the screw e presses the extension u2 of the supply container tightly against the member to be lubricated when the screw e is tightened. rllhe outlet passage o? out the container a registers with the annular groove c1 of the hollow screw when the apparatus is in position and the annular groove is connected by a radial passage c2 with a longitudinal passage e3 in the screw e. Thislongitudinal passage e3 is reduced in diameter at its rearward portion and the reduced portion is adapted to receive a suction wick It held in position by an annular member g. In the front enlarged portion of the passage es is fitted a connecting nipple c provided with a non-return-valve t', this nipple being adapted to be connected to a suitable lubricating pump. Y

The method of operation of the wick lubricator above described is as follows:

Lubricating oil is pumped by a suitable pump into the wiclr lubricator through the nipple la. As the direct passage to the point to be lubricated is through the suction wick it the lubricant passesl along the path ot least resistance, therefore, through the passage c2. the annular groove c1 and the outlet passage a3 into the supply containers. rlhe air contained in the latter escapes to thel outside through the passages c1 and c and as soon as the lubricating il which is pumped in has reached a predetermined'level the rising lubricating oil raises the iloat al, slidably mounted on the pipe b, and closes the passage c1. ly pumping in additional lubricating oil anyair cont -ined under the top of the centaine is compressed and by reason of the greater resistance now pesent in the container the lubricant isl forced through the suction wich /t directly to the point to be lubricated. This is thus thoroughly lubricated as is the case when lubricating under high pressure and any dirt which may have entered the point to be lubricated is thus removed. The pressure existing in the supply container assists the suction action of the wick, after the operation of the pump has ceased, until an equalization of pressure occurs. TEqualization of pressure occurs as soon as the float, by reason of the suction of lubricating oil, has sunk to such an extent that the passage 01 is again exposed. From now on only atmospheric pressure acts on the lubricant and the wick lubricator now operates in t-he usual manner.

It is essential that the passage e2 leading from the passage e3 totheoutlet passage a3 of the container is located between the suction wick It, disposed in the reduced portion of the passage c3, andthe non-return valve i as with such an arrangement it is possible to force the lubricating oil by means ofthe high pressure pump to the point at which the resistance is lowest, therefore either into the container or through the suction wick directly into the member to be lubricated.

I claim as my invention:4 i .'1. In a lubricator, a reservoiri'an automatic air valve therefor comprising a tubular 'member providing a'l passageway connecting said reservoir with atmosphere, and a oat for closing said passageway, an inlet nipple `provided with a non-return valve, a passageway connecting said reservoir with a part requiring lubrication, and a wick in said passageway. n d y 2. In a lubricator, a reservoir, an inlet nipple therefor provided with a non-'return valve, a passageway connecting said reservoir with a bearing to be lubricated, an air vent for said Vreservoir comprising a tubular member vertically positioned within said reservoir, a transverse passageway .in said tubular member, and a floatmember slidably mounted on said tubular member and adapty ed to close said passageway when said reservoir is filled to a predetermined height.

p 3. wick lubricator `comprising a lubricant reservoir, a base member attached thereto and having screw-threaded engagement4 with a bearing lto beflubricated, an annular groove in said basemember adjacent anV opening to said reservoir, a passageway longitudinally disposed in said base member having a lubricant fitting entering one end,

and a wick member extending from a point adjacent the middle thereof tothe other end, a check valve in said lubricant fitting,V and a valve for closingk a passageway from said reservoir to atmosphere after a predetermined quantity of lubricant has beenv placed .ink said reservoir.

In testimony whereof I aflix my signature.

HANS KREIDEL. 

